CN102668000A - Direct current breaker device - Google Patents
Direct current breaker device Download PDFInfo
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- CN102668000A CN102668000A CN2010800501857A CN201080050185A CN102668000A CN 102668000 A CN102668000 A CN 102668000A CN 2010800501857 A CN2010800501857 A CN 2010800501857A CN 201080050185 A CN201080050185 A CN 201080050185A CN 102668000 A CN102668000 A CN 102668000A
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- mentioned
- terminal
- direct current
- mechanical contact
- electric current
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
- H01H33/596—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for interrupting dc
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
Abstract
Disclosed is a direct current breaker device equipped with an overcurrent breaker unit which cuts off the overcurrent supply in wiring, and a step-down unit which steps down the voltage supplied to the overcurrent breaker unit.
Description
Technical field
The present invention relates to possess between a kind of secondary portion of terminal of elementary portion of terminal and the load-side at the direct current source direct current shearing device of overcurrent cutting-off portion.
Background technology
In the past, as this direct current shearing device, the direct current shearing device that patent documentation 1 is put down in writing had for example been proposed.Above-mentioned direct current shearing device possesses: the elementary portion of terminal that becomes the direct current source; The secondary portion of terminal that is electrically connected with load (electronic equipment etc.); And open-close mechanism section, it has the mechanical contact that is configured in the supply line that these two portion of terminal are electrically connected.The mechanical contact of this open-close mechanism section comprises fixed contact and moving contact, the operation of the operating grip of using through manual operation, and moving contact can move.And, being positioned at operating grip under the situation of open-circuit position, moving contact separates from fixed contact, is cut off from the electric current supply of DC power supply side loading side.On the other hand, be displaced to from the open-circuit position under the situation of on-position at operating grip, the moving contact displacement makes to allow from DC power supply side loading side supplying electric current to contact with fixed contact.
Patent documentation 1: TOHKEMY 2009-163963 communique
; When making operating grip be displaced to the open-circuit position and cut off the electric current supply from DC power supply side loading side from on-position; Promptly in mechanical contact, make moving contact when fixed contact is separated, might produce arc discharge (also abbreviating " electric arc " as) at the mechanical contact place.Particularly, in being arranged at the direct current shearing device of DC distribution board (as the circuit breaker of giving an example out), elementary portion of terminal becomes high pressure, and wherein, this DC distribution board makes from the direct current power of the direct-current power supply of high pressure and is branched off into a plurality of loads.Therefore, when operating grip was displaced to the open-circuit position, the possibility that produces arc discharge at the mechanical contact place was high.
Summary of the invention
The present invention In view of the foregoing accomplishes, and its purpose is to provide a kind of direct current shearing device that can suppress the generation of arc discharge.
According to a first aspect of the invention, a kind of direct current shearing device is provided, it possesses: overcurrent cutting-off portion, and it cuts off the supply of the overcurrent in the wiring; And step-down portion, it reduces the voltage of supplying with to above-mentioned overcurrent cutting-off portion.Above-mentioned direct current shearing device also possesses: elementary portion of terminal, and it is connected to the direct current source; And secondary portion of terminal; It is connected to load-side, and wherein, above-mentioned step-down portion is configured between above-mentioned elementary portion of terminal and the above-mentioned secondary portion of terminal; The voltage that applies from above-mentioned direct current source is reduced; Above-mentioned overcurrent cutting-off portion is configured in than above-mentioned step-down portion and more leans on the position of above-mentioned secondary portion of terminal side, and is crossing under the situation of overcurrent from above-mentioned elementary portion of terminal effluent, cuts off the electric current supply that carries out to the sub-portion of above-mentioned secondary end from above-mentioned elementary portion of terminal.
According to said structure, overcurrent cutting-off portion is applied in by step-down portion and carries out the voltage after the step-down.Therefore, compare the voltage step-down that overcurrent cutting-off portion is applied with the situation that step-down portion is not set or in the situation of more leaning on the position of load-side that step-down portion is set than overcurrent cutting-off portion in the direct current shearing device.Consequently, can be suppressed at overcurrent cutting-off portion moves and this overcurrent cutting-off portion, produces arc discharge to cut off from elementary portion of terminal when the electric current supply of secondary portion of terminal.
In above-mentioned direct current shearing device; Also can be: above-mentioned elementary portion of terminal be configured to being configured under the state in the container (body) with above-mentioned secondary portion of terminal, above-mentioned step-down portion and above-mentioned overcurrent cutting-off portion: along with the mobile and above-mentioned elementary portion of terminal of said vesse with the contact rod contact that is set at above-mentioned direct current source or separate from this contact rod; In said vesse, be provided with separation limit portion; Allow from above-mentioned elementary portion of terminal under the situation of the sub-portion of above-mentioned secondary end supplying electric current in above-mentioned overcurrent cutting-off portion, this separation limit portion restriction said vesse is to moving like lower direction: this direction is the direction of above-mentioned elementary portion of terminal from above-mentioned contact rod separation.
According to said structure, allow from elementary portion of terminal under the state of secondary portion of terminal supplying electric current in overcurrent cutting-off portion, limit container to moving like lower direction through separation limit portion: this direction is the direction that elementary portion of terminal and contact rod are separated.Therefore, when electric current when DC power supply flows to load-side via the direct current shearing device, elementary portion of terminal can not separated from contact rod.Thereby, can be suppressed between elementary portion of terminal and the contact rod and produce arc discharge.
In addition; Allow from above-mentioned elementary portion of terminal under the situation of the sub-portion of above-mentioned secondary end supplying electric current in above-mentioned overcurrent cutting-off portion; Through to the part of above-mentioned separation limit portion supply flow through the electric current of above-mentioned overcurrent cutting-off portion, above-mentioned separation limit portion can move with the restriction said vesse to moving like lower direction: this direction is the direction of above-mentioned elementary portion of terminal from above-mentioned contact rod separation.
According to said structure, the part of the electric current of separation limit portion through being supplied to the overcurrent cutting-off portion that flows through is moved, and the restriction container is to moving like lower direction: this direction is the direction of elementary portion of terminal from the contact rod separation.Therefore, do not carry out complicated control and just can suppress separating of contact rod and elementary portion of terminal, as a result of, can be suppressed between contact rod and the elementary portion of terminal and produce arc discharge.
In above-mentioned direct current shearing device, also can be: above-mentioned overcurrent cutting-off portion has: mechanical contact, and it is configured in the supply line that is electrically connected between above-mentioned elementary portion of terminal and the above-mentioned secondary portion of terminal, and carries out on-off action; And open-close mechanism section; Be positioned at the operating grip that manual operation is used under the situation of on-position; This open-close mechanism section makes above-mentioned mechanical contact become closure state to allow from above-mentioned elementary portion of terminal to the sub-portion of above-mentioned secondary end supplying electric current; On the other hand, be positioned at the aforesaid operations handle under the situation of the open-circuit position different with above-mentioned on-position, this open-close mechanism section makes above-mentioned mechanical contact become off-state to cut off the electric current supply that carries out to the sub-portion of above-mentioned secondary end from above-mentioned elementary portion of terminal; Above-mentioned direct current shearing device also possesses: switch element, and it is configured in the position of more leaning on above-mentioned elementary portion of terminal side than above-mentioned overcurrent cutting-off portion; And control part; The aforesaid operations handle from above-mentioned on-position under the situation of above-mentioned open-circuit position displacement; Make through above-mentioned open-close mechanism section before above-mentioned mechanical contact becomes off-state; Control part moves above-mentioned switch element under off-state, make the electric current above-mentioned overcurrent cutting-off portion that do not flow through.
According to said structure, more leaning on the position of elementary portion of terminal side to be provided with the switch element that moves according to from the control command of control part than overcurrent cutting-off portion.Be displaced to from on-position under the situation of open-circuit position at operating grip, before the mechanical contact of overcurrent cutting-off portion became off-state, this switch element became off-state, made electric current this mechanical contact of not flowing through.Therefore, become off-state at this switch element and do not have under the state that electric current flows through, mechanical contact becomes off-state from closure state.Thereby, can avoid when making mechanical contact become off-state along with the displacement of operating grip, producing arc discharge at this mechanical contact place.
Above-mentioned direct current shearing device can also possess: tripping operation (drawing outer) device, and it forcibly makes above-mentioned mechanical contact carry out off action; And current detecting part; Its electric current to the above-mentioned mechanical contact of flowing through detects; Wherein, be under the situation more than the predefined current threshold by the detected electric current of above-mentioned current detecting part, above-mentioned control part moves above-mentioned switch element to make the electric current above-mentioned overcurrent cutting-off portion that do not flow through under off-state; Afterwards, above-mentioned tripgear is controlled forcibly to make above-mentioned mechanical contact become off-state.
According to said structure, in that detected electric current is under the situation more than the current threshold by current detecting part, be judged as overcurrent from elementary portion of terminal effluent through the mechanical contact of overcurrent cutting-off portion.And, stopping after the electric current supply of overcurrent cutting-off portion through making switch element become off-state, the electric current supply that carries out to secondary portion of terminal from elementary portion of terminal to cut off moves in overcurrent cutting-off portion.Therefore, can avoid under overcurrent is flowed through the situation of mechanical contact of overcurrent cutting-off portion, producing arc discharge at this mechanical contact place.
Description of drawings
According to the explanation of the preferred implementation of stating after providing with following accompanying drawing, can understand the object of the invention and characteristic.
Fig. 1 is the structure chart that schematically shows the electric power supply system of this execution mode.
Fig. 2 is the structure chart that schematically shows the DC distribution board of this execution mode.
Fig. 3 is the summary end view of the direct current shearing device of this execution mode.
Fig. 4 is the major part cutaway view of direct current shearing device.
Fig. 5 is the block diagram of the summary structure of expression direct current shearing device.
Fig. 6 is the sequential chart when operating grip has been carried out operation.
Fig. 7 is the sequential chart when flowing through overcurrent in the mechanical contact.
(a) of Fig. 8 and (b) be the sectional view that schematically shows the locking mechanism of other execution mode.
Embodiment
Below, the accompanying drawing that reference forms the part of this specification comes execution mode of the present invention is carried out more detailed explanation.In institute's drawings attached,, and omit repeat specification to them to same or similar part additional phase parts mark together.
Below, according to the execution mode that Fig. 1 ~ the present invention is specialized in Fig. 7 explanation.
As shown in Figure 1, in dwelling house, be provided with electric power supply system 1,1 pair of this electric power supply system is arranged on various device (lighting apparatus, air-conditioning, household electrical appliance and the audio-visual equipment etc.) supply capability of premises.Electric power supply system 1 makes the various device action with home-use commercial ac power source (AC power supplies) 2 as electric power, in addition will utilize the electric power of the solar cell 3 of solar power generation also to be supplied to various device as power supply.Electric power supply system 1 is except to DC equipment 5 supply capabilities of moving through input DC power (DC power supply), also AC equipment 6 supply capabilities to moving through input ac power (AC power supplies).Below, in this manual, the house of separate house is assumed to uses building of the present invention and describe, but do not get rid of technological thought of the present invention is not applied to building, collective residence as office, Shopping Arcade, factory etc.
In electric power supply system 1, be provided with controller 7 and be used as the distribution board of this system 1 with DC distribution board (built-in dc circuit breaker) 8.In addition, in electric power supply system 1, be provided with control unit 9 and relay unit 10 and be used as equipment that the action of the DC equipment 5 of dwelling house is controlled.
Make the AC distribution board 11 of AC power branch be connected to controller 7 through exchanging system power line 12.Controller 7 is connected with commercial ac power source 2 via this AC distribution board 11, and is connected with solar cell 3 through direct current system power line 13.Controller 7 is taken into alternating electromotive force from AC distribution board 11, and is taken into direct current power from solar cell 3, and these power conversions are used as device power supply (DPS) for the direct current power of stipulating.And this direct current power after controller 7 will be changed outputs to DC distribution board 8 through direct current system power line 14, perhaps outputs to storage battery 16 through direct current system power line 15 and accumulates this electric power.Thereby, in this execution mode, constitute DC power supply by controller 7.In addition, controller 7 not only can be taken into alternating electromotive force from AC distribution board 11, can also convert the direct current power of solar cell 3, storage battery 16 into alternating electromotive force and be supplied to AC distribution board 11.Controller 7 is through the exchanges data between holding wire 17 execution and the DC distribution board 8.
On control unit 9, be connected with a plurality of DC equipment 5,5 ...These DC equipment 5 are connected with control unit 9 through direct current supply lines 22, this direct current supply lines 22 can through a pair of line carry direct current power and data the two.Direct current supply lines 22 utilizes a pair of line through so-called power line carrier communication, and the two is transported to DC equipment 5 with electric power and data, and this power line carrier communication is meant that the signal of communication with the carrier wave teledata that utilizes high frequency is added to as the direct voltage of the power supply of DC equipment.Control unit 9 obtains the DC power supply of DC equipment 5 through direct current system power line 18, grasps based on the action command that obtains from DC distribution board 8 through holding wire 20 which kind of control which DC equipment 5 is carried out.Then, control unit 9 outputs to the DC equipment 5 of being indicated through direct current supply lines 22 with direct voltage and action command, comes the action of DC equipment 5 is controlled.
The switch 23 of operation was connected to control unit 9 through direct current supply lines 22 when the action of the DC equipment 5 of premises was switched.In addition, transducer 24 is connected to control unit 9 through direct current supply lines 22, and this transducer 24 for example detects the transmission electric wave from the infrared ray remote controllers.Thus, not only can be according to from the action of DC distribution board 8 indication, can also make the signal of communication direct current supply lines 22 of flowing through come DC equipment (load) 5 is controlled according to the detection of the operation of switch 23, transducer 24.
A plurality of DC equipment 5,5 ... Be connected to relay unit 10 through direct current system power line 25 independently respectively.Relay unit 10 obtains the DC power supply of DC equipment 5 through direct current system power line 19, grasps making 5 actions of which DC equipment based on the action command that obtains from DC distribution board 8 through holding wire 21.Then, to the DC equipment 5 of being indicated, the power supply that relay unit 10 utilizes built-in relay to be switched on or switched off and carries out to direct current system power line 25 is supplied with, thereby the action of DC equipment 5 is controlled.In addition, be used for that DC equipment 5 is carried out manually operated a plurality of switch 26 and be connected to relay unit 10, through the operation of switch 26, the power supply that utilizes relay to be switched on or switched off to carry out to direct current system power line 25 is supplied with, and controls DC equipment 5 thus.
The direct current jack 27 that for example is installed in the dwelling house with the form of wall socket, floor box is connected to DC distribution board 8 through direct current system power line 28.If the plug (omitting diagram) of DC equipment (load) is inserted this direct current jack 27, then can directly supply with direct current power to this equipment.
In addition, between commercial ac power source 2 and AC distribution board 11, be connected with the ammeter 29 of use amount that can long-range inspection commercial ac power source 2.Not only be equipped with the function of long-range inspection source power supply use amount in the ammeter 29, for example also be equipped with the function of power line carrier communication, radio communication.Ammeter 29 passes through power line carrier communication, radio communication etc. to transmission checking result such as Utilities Electric Co.s.
In electric power supply system 1, be provided with the network system 30 that to control the various device of premises through network service.The controller that premises server (load) 31 is used as this system 30 is set in network system 30.Premises server 31 is connected with the outer management server 32 of dwelling house via network N such as internets, and is connected to premises equipment 34 through holding wire 33.In addition, premises server 31 will move as power supply through the direct current power that direct current system power line 35 obtains from DC distribution board 8.
The control cabinet 36 that the action control of the various device of the premises of communication Network Based is managed is connected to premises server 31 through holding wire 37.Control cabinet 36 is connected with controller 7 and DC distribution board 8 through holding wire 17, and can directly control DC equipment 5 through direct current supply lines 38.For example can the employed coal gas amount of long-range inspection, the coal gas/tap water meter 39 of the water yield is connected to control cabinet 36 from the beginning, and the guidance panel of network system 30 (load) 40 also is connected with control cabinet 36.On guidance panel 40, be connected with the surveillance equipment 41 that for example constitutes by call gate off-premises station (De ア ホ Application device), transducer or camera.
Then, according to Fig. 2 DC distribution board 8 is described.
As shown in Figure 2, DC distribution board 8 possesses a plurality of (among Fig. 2 being 4) direct current shearing device 50.Specifically, between controller 7 and the control unit 9, between controller 7 and the relay unit 10, between controller 7 and the direct current jack 27 and dispose direct current shearing device 50 respectively between controller 7 and the premises server 31.These direct current shearing devices 50 constitute respectively and when overcurrent flows through the direct current shearing device, cut off the electric power supply of carrying out to load-side.In addition, each direct current shearing device 50 is mutual identical structures.
Then, according to Fig. 3 ~ Fig. 7 direct current shearing device 50 is described.In addition, in this execution mode, the direction with the paper quadrature among Fig. 3 is called X-direction, and, the left and right directions among Fig. 3 is called Y direction, and the above-below direction among Fig. 3 is called Z-direction.
As shown in Figure 3, direct current shearing device 50 possesses the container 51 of seeing roughly rectangular hollow shape from the side, and this container 51 is made up of insulating properties material (enumerating out phenolic resins as an example).This container 51+Y direction side (right side among Fig. 3) is formed with respectively and corresponding three the recess 53a of three contact rod 52a, 52b, 52c, 53b, the 53c that extend from DC distribution board 8 along Y direction.In container 51, in the wall that constitutes each recess 53a, 53b, 53c-be respectively arranged with on the wall of Z direction (downside among Fig. 3) as can with the input terminal 54 of contact rod 52a, 52b, the contacted elementary portion of terminal of 52c.And; Get in each recess 53a, 53b, the 53c at the front end (end of Y direction side) of each contact rod 52a, 52b, 52c and direct current shearing device 50 be installed under the situation of DC distribution board 8, via contact rod 52a, 52b, 52c respectively to each input terminal 54 supplying electric current.
As shown in Figure 4, container 51-through hole 57 that the wall portion (the wall portion of the downside among Fig. 4) of Z direction side is connected inside and outside being formed with container 51.In addition, be installed at direct current shearing device 50 under the situation of DC distribution board 8, slot part 58 is accommodated in being formed with through hole 57 corresponding positions in this DC distribution board 8.
As shown in Figure 5; In container 51,, be equipped with step-down portion 60 (part that with dashed lines surrounds Fig. 5), overcurrent cutting-off portion 61 (part of in Fig. 5, surrounding) and current detecting part 62 successively with chain-dotted line from input terminal 54 sides with in input terminal 54 and the supply line 59 that lead-out terminal 56 is electrically connected.Step-down portion 60 possesses: reduction voltage circuit 63 (being also referred to as " DC-DC transducer "), and it is used for the voltage (for example 48V) that voltage (for example 300V) is reduced to regulation that applies of self-controller 7 sides in future; And switch element 64 (semiconductor switchs of MOSFET etc.), it is configured in the position of more leaning on overcurrent cutting-off portion 61 sides than this reduction voltage circuit 63.This switch element 64 is configured to that its anode is positioned at input terminal 54 sides and its negative electrode is positioned at lead-out terminal 56 sides, and this switch element 64 is according to moving from the control command of control part 65.In addition, in this execution mode, be called " on-state " from step-down portion 60 to the state of the switch element 64 of overcurrent cutting-off portion 61 supplying electric currents with allowing, the state that will limit the switch element 64 of (cut-out) electric current supply is called " off-state ".
In addition, in order to prevent the damage of switch element 64, between reduction voltage circuit 63 and this switch element 64, be provided with the not shown diode of the adverse current that prevents electric current.
Overcurrent cutting-off portion 61 possesses: mechanical contact 66, and it has fixed contact 66a that is fixed on container 51 sides and the moving contact 66b that contacts or separate with this fixed contact 66a; Open-close mechanism section 67, it correspondingly moves the mechanical contact 66 and the displacement of operating grip 55; And tripgear 68, the location independent ground of itself and operating grip 55 forcibly makes mechanical contact 66 carry out on-off action according to the control command from control part 65.When operating grip 55 was positioned at open-circuit position P1, open-close mechanism section 67 made moving contact 66b separate from fixed contact 66a, that is, make mechanical contact 66 become off-state.In addition, when operating grip 55 when P1 is displaced to on-position P2 from the open-circuit position, open-close mechanism section 67 makes moving contact 66b and fixed contact 66a butt, that is, make mechanical contact 66 become closure state.But; When being positioned under the state of on-position P2 the hand leave operation handle 55 as the user at operating grip 55; Open-close mechanism section 67 makes operating grip 55 be displaced to open-circuit position P1 from on-position P2, and makes mechanical contact 66 become off-state from closure state.
In addition, when operating grip 55 when P1 is displaced to complete on-position P3 from the open-circuit position, open-close mechanism section 67 makes mechanical contact 66 become closure state.In this case, operating grip 55 is pinned by not shown bolt lock mechanism.Consequently, operating grip 55 remains on complete on-position P3, and mechanical contact 66 is kept closed.In addition, with operating grip 55 from complete on-position P3 under the situation of open-circuit position P1 displacement, when operating grip 55 between on-position P3 fully and the on-position P2 time, the closure state of open-close mechanism section 67 maintenance mechanical contacts 66.On the other hand, when operating grip 55 is positioned at when more leaning on the position of open-circuit position P1 side than on-position P2, open-close mechanism section 67 makes mechanical contact 66 become off-state from closure state.
As an example, tripgear 68 possesses: magnetic force generation portion (omit diagram), and it produces electromagnetic force being supplied under the situation of electric current; Plunger (plunger) (omitting diagram), it can advance and retreat mobile along prescribed direction; And force application part (omitting diagram), it pushes this plunger on the prescribed direction a wherein side.When having produced electromagnetic force by magnetic force generation portion, plunger opposing from the application of force of force application part and to the direction of regulation on the opposite side that wherein a side is opposite move.Move to opposite side like this through plunger, moving contact 66b separates, promptly trips from fixed contact 66a.In addition, mechanical contact 66 is become under the situation of off-state, open-close mechanism section 67 forcibly makes operating grip 55 be displaced to open-circuit position P1 from complete on-position P3.
Current detecting part 62 will with from input terminal 54 effluents to the electric current of lead-out terminal 56 sides, promptly the flow through big or small corresponding current signal of electric current of mechanical contact 66 of overcurrent cutting-off portion 61 outputs to control part 65.
In addition; In container 51, be provided with position detection part 69 (for example rotating detector) and as the locking mechanism 70 of separation limit portion; Wherein, This position detection part 69 is used for the rotational angle θ (with reference to Fig. 5) of operating grip 55 is detected, and the situation limit input terminal 54 that this locking mechanism 70 is used for being installed in DC distribution board 8 at direct current shearing device 50 is from contact rod 52a, 52b, 52c separation.Position detection part 69 will output to control part 65 with the corresponding position signalling of rotational angle θ of operating grip 55.
In addition, as shown in Figure 7, control part 65 detects the electric current I that flows through mechanical contact 66 according to the current signal from current detecting part 62.And, be under the situation more than the predefined current threshold KI in the electric current I that flows through mechanical contact 66, control part 65 is judged as overcurrent and flows through mechanical contact 66, and restriction is off-state to switch element 64 output control commands thereby make this switch element 64.Afterwards, 65 pairs of tripgears 68 of control part are controlled, forcibly the mechanical contact 66 of closure state is become off-state.
Then, P1 is displaced to complete on-position P3 and the effect of operating grip 55 when complete on-position P3 is displaced to open-circuit position P1 afterwards from the open-circuit position according to sequential chart description operation handle shown in Figure 6 55.
So; When the operating grip that is positioned at open-circuit position P1 55 during to complete on-position P3 displacement; If the rotational angle θ of operating grip 55 becomes first timing t, 11 processes of the first angle K θ 1, then the action through open-close mechanism section 67 makes mechanical contact 66 become closure state from off-state.Then; Become second timing t 12 of the second angle K θ 2 at the rotational angle θ of operating grip 55; Operating grip 55 is accomplished to the displacement of complete on-position P3, therefore limits through the displacement of above-mentioned bolt lock mechanism to operating grip 55, so that mechanical contact 66 is kept closed.In addition, switch element 64 becomes on-state through being transfused to control command from control part 65.So slave controller 7 sides are to mechanical contact 66 supplying electric currents.
At this moment, also to magnetic force generation portion 72 supplying electric currents of locking mechanism 70, so moving-member 73 is to-Z direction side shifting, and the front end 73a of this moving-member 73 gets into accommodating in the slot part 58 of DC distribution boards 8 via the through hole 57 of container 51.Consequently, restriction direct current shearing device 50 disengagings from DC distribution board 8.Therefore, electric current flow through mechanical contact 66 during, input terminal 54 is able to restriction from the separation of contact rod 52a, 52b, 52c.
Afterwards, when through the user to the operation of operating grip 55 and the rotational angle θ of this operating grip 55 during less than the second angle K θ 2, switch element 64 is not transfused to the control command from control part 65, thereby becomes off-state (the 3rd timing t 13).In the 3rd timing t 13, the rotational angle θ of operating grip 55 is the first angle K θ more than 1, therefore keeps the closure state of mechanical contact 66.But because switch element 64 is an off-state, so electric current can not flow through mechanical contact 66.Therefore, not to magnetic force generation portion 72 supplying electric currents of locking mechanism 70, so locking mechanism 70 becomes closed condition, allows 50 disengagings from DC distribution board 8 of direct current shearing device.
After the 4th timing t 14, as the rotational angle θ of operating grip 55 during less than the first angle K θ 1, mechanical contact 66 becomes off-state through the action of open-close mechanism section 67.At this moment, do not had the electric current mechanical contact 66 of flowing through, therefore can be suppressed at this mechanical contact 66 that becomes off-state from closure state and produce arc discharges.In addition, even fault has taken place and this switch element 64 can not become under the situation of off-state at switch element 64, the voltage that is applied to mechanical contact 66 also is by the voltage after reduction voltage circuit 63 step-downs (voltage of regulation).Therefore, compare with the situation that applies voltage (that is, not by the voltage of step-down) that mechanical contact 66 is applied self-controller 7 sides, the possibility that when closure state becomes off-state, produces arc discharge when this mechanical contact 66 reduces.
Effect when then, according to sequential chart shown in Figure 7 overcurrent being flow through mechanical contact 66 describes.
So, through the user to the operation of operating grip 55 and this operating grip 55 is displaced to first timing t 21 of complete on-position P3, switch element 64 is an on-state, and mechanical contact 66 is a closure state.Therefore, in mechanical contact 66, electric current flows to lead-out terminal 56 from input terminal 54.If owing to after the electricity usage of load-side too much to wait the electric current I of the mechanical contact 66 that causes flowing through be more than the current threshold KI, then be judged as overcurrent and flow through mechanical contact 66 (second timing t 22).So switch element 64 is not transfused to the control command from control part 65, thereby become off-state.Consequently, the flow through electric current I of mechanical contact 66 becomes " 0 (zero) ampere ".The 3rd timing t 23 after and then, mechanical contact 66 forcibly becomes off-state through the action of tripgear 68.At this moment, do not had the electric current mechanical contact 66 of flowing through, therefore can be suppressed at this mechanical contact 66 that becomes off-state from closure state and produce arc discharges.In addition, operating grip 55 forcibly is displaced to open-circuit position P1 from complete on-position P3 through the action of open-close mechanism section 67.
Thereby, in this execution mode, can obtain effect as follows.
(1) mechanical contact 66 to overcurrent cutting-off portion 61 applies by the voltage after 60 step-downs of step-down portion (voltage of regulation).Therefore, compare the voltage step-down that the mechanical contact 66 of overcurrent cutting-off portion 61 is applied with the situation that step-down portion 60 is not set or in the situation of more leaning on the position of lead-out terminal 56 sides that step-down portion 60 is set than overcurrent cutting-off portion 61 in direct current shearing device 50.Consequently, can be suppressed at overcurrent cutting-off portion 61 and move that the mechanical contact 66 in this overcurrent cutting-off portion 61 produces arc discharges when cutting off the electric current supply from input terminal 54 side direction lead-out terminals 56 sides.
(2) direct current shearing device 50 is being installed on DC distribution board 8 and operating grip 55 is positioned under the situation of complete on-position P3, through of the separation of locking mechanism 70 restriction input terminals 54 from the contact rod 52a that is set at DC distribution board 8 sides, 52b, 52c.Therefore, when electric current slave controller 7 flowed to load-side via direct current shearing device 50, input terminal 54 can not separate from contact rod 52a, 52b, 52c gratuitously.Thereby, can be suppressed between input terminal 54 and contact rod 52a, 52b, the 52c and produce arc discharge.
(3) and, through to the part of locking mechanism 70 supply flows, drive this locking mechanism 70 and make the front end 73a of its moving-member 73 get into accommodating in the slot part 58 of DC distribution board 8 sides via the through hole 57 of container 51 through the electric current of mechanical contact 66.Consequently, electric current flow through mechanical contact 66 during, can limit direct current shearing device 50 and unload from DC distribution board 8 gratuitously.Thereby, locking mechanism 70 is not carried out complicated control and just can easily be suppressed between input terminal 54 and contact rod 52a, 52b, the 52c and produce arc discharge.
(4) on the other hand, do not having electric current to flow through under the situation of mechanical contact 66, the moving-member 73 of locking mechanism 70 submerges and makes its front end 73a outstanding from through hole 57 in the container 51, therefore allows the disengaging of direct current shearing device 50 from DC distribution board 8.Thereby, when will with direct current shearing device 50 when DC distribution board 8 unloads, becoming off-state, can easily direct current shearing device 50 be unloaded from DC distribution board 8 through making mechanical contact 66.
(5) more leaning on the position of input terminal 54 sides to be provided with switch element 64 than overcurrent cutting-off portion 61, this switch element 64 is according to moving from the control command of control part 65.And, operating grip 55 from complete on-position P3 under the situation of open-circuit position P1 displacement, before the mechanical contact 66 of overcurrent cutting-off portion 61 became off-state, switch element 64 becomes off-state made the electric current mechanical contact 66 of not flowing through.Therefore, under the state of the electric current of not flowing through, mechanical contact 66 becomes off-state from closure state.Thereby, can avoid making mechanical contact 66 to produce arc discharges at this mechanical contact 66 when closure state becomes off-state when the displacement of attended operation handle 55.
(6) in the mechanical contact that is judged as overcurrent cutting-off portion 61 66, flowed through under the situation of overcurrent, after switch element 64 became off-state, mechanical contact 66 became closure state.That is,, also after becoming the state that does not have electric current to flow through, make mechanical contact 66 become off-state from closure state even flow through under the situation of mechanical contact 66 in overcurrent.Therefore, can avoid flowing through mechanical contact 66 and mechanical contact 66 being become under the situation of off-state produce arc discharge at these mechanical contact 66 places in overcurrent.
In addition, this execution mode also can change to other following execution mode.
In execution mode, control part 65 also can not limit switch element 64 output control commands when overcurrent is flowed through mechanical contact 66.That is the mechanical contact 66 that, when overcurrent is flowed through mechanical contact 66, also this overcurrent is flowed through becomes off-state.Even this structure is compared the voltage under mechanical contact 66 voltage that applies and the situation that step-down portion 60 is not set and to be still low pressure.Therefore, can reduce when making mechanical contact 66 become off-state the possibility that produces arc discharge at these mechanical contact 66 places.
In execution mode, also can switch element 64 be configured in the position of more leaning on lead-out terminal 56 sides than mechanical contact 66.
In execution mode, switch element 64 can be set in direct current shearing device 50 yet.Even this structure is compared the voltage under mechanical contact 66 voltage that applies and the situation that step-down portion 60 is not set and to be still low pressure.Therefore, can reduce when making mechanical contact 66 become off-state the possibility that produces arc discharge at these mechanical contact 66 places.
In execution mode, position detection part 69 can constitute possess Hall element, position transducer, sensitive switch, reed switch and near in the switch at least one.
In execution mode, a plurality of (for example 4) locking mechanism 70 can be set.In this case, expectation is configured in the mutually different position on the Y direction respectively with each locking mechanism 70.
In execution mode, locking mechanism also can be the structure of a part that is not supplied to the electric current of the mechanical contact 66 of flowing through.For example Fig. 8 (a) and (b) shown in, locking mechanism 70A possesses: can along Z-direction advance and retreat mobile moving-member 80, from this moving-member 80+end of Z direction side applies the force application part 82 to the power of-Z direction side to-extension component 81 that Y direction side is extended and via 81 pairs of moving-members 80 of this extension component.Moving-member 80-form+part that the part of Y direction side is positioned at ratio-Y direction side more leans on+position of Z direction side the oblique shape of end 80a of Z direction side.
In addition, in container 51, the sidewall of-Y direction side is provided with intercommunicating pore 83, extension component 81-the end 81a of Y direction side is configured in outside the container 51 via intercommunicating pore 83.In addition, intercommunicating pore 83 is the slotted holes that extend along Z-direction.Therefore, the user through make extension component 81-the end 81a of Y direction side moves along Z-direction, and the moving-member that is fixed on this extension component 81 80 is moved along Z-direction.
Constituting under the situation of this structure, when when DC distribution board 8 is installed direct current shearing devices 50, make extension component 81 and moving-member 80 opposing force application parts 82 the application of force and to+Z direction side shifting.Then, accomplishing direct current shearing device 50 under the state of the installation of DC distribution board 8, when the user stopped the operation of extension component 81, moving-member 80 and extension component 81 were through from the application of force of force application part 82 and to-Z direction side shifting.So, moving-member 80-the end 80a of Z direction side gets into accommodating in the slot part 58 of DC distribution board 8 sides via the through hole 57 of container 51.Consequently, moving of restriction container 51 can limit the disengaging of input terminal 54 from contact rod 52a, 52b, 52c.
In execution mode, direct current shearing device 50 also can be the structure that does not possess locking mechanism 70,70A.Even this structure also can suppress the generation of the arc discharge at mechanical contact 66 places.
In execution mode, switch element 64 also can be so-called contactless type switches such as bipolar transistor.
In execution mode, overcurrent cutting-off portion 61 also can be so-called fuse.
More than, preferred embodiment be illustrated of the present invention, but the present invention is not limited to these specific execution modes, under the situation of the scope that does not break away from claim, can carry out various changes and distortion, these also belong to category of the present invention.
Claims (6)
1. direct current shearing device possesses:
Overcurrent cutting-off portion, it cuts off the supply of the overcurrent in the wiring; And
Step-down portion, it reduces the voltage of supplying with to above-mentioned overcurrent cutting-off portion.
2. direct current shearing device according to claim 1 is characterized in that also possessing:
Elementary portion of terminal, it is connected to the direct current source; And
Secondary portion of terminal, it is connected to load-side,
Wherein, above-mentioned step-down portion is configured between above-mentioned elementary portion of terminal and the above-mentioned secondary portion of terminal, and the voltage that applies from above-mentioned direct current source is reduced,
Above-mentioned overcurrent cutting-off portion is configured in than above-mentioned step-down portion and more leans on the position of above-mentioned secondary portion of terminal side, and is crossing under the situation of overcurrent from above-mentioned elementary portion of terminal effluent, cuts off the electric current supply that carries out to the sub-portion of above-mentioned secondary end from above-mentioned elementary portion of terminal.
3. direct current shearing device according to claim 2 is characterized in that,
Above-mentioned elementary portion of terminal is configured to being configured under the state in the container with above-mentioned secondary portion of terminal, above-mentioned step-down portion and above-mentioned overcurrent cutting-off portion: along with the mobile and above-mentioned elementary portion of terminal of said vesse with the contact rod contact that is set at above-mentioned direct current source or separate from this contact rod
In said vesse, be provided with separation limit portion; Allow from above-mentioned elementary portion of terminal under the situation of the sub-portion of above-mentioned secondary end supplying electric current in above-mentioned overcurrent cutting-off portion, this separation limit portion restriction said vesse is to moving like lower direction: this direction is the direction of above-mentioned elementary portion of terminal from above-mentioned contact rod separation.
4. direct current shearing device according to claim 3 is characterized in that,
Allow from above-mentioned elementary portion of terminal under the situation of the sub-portion of above-mentioned secondary end supplying electric current in above-mentioned overcurrent cutting-off portion; Through to the part of above-mentioned separation limit portion supply flow through the electric current of above-mentioned overcurrent cutting-off portion, above-mentioned separation limit portion moves with the restriction said vesse to moving like lower direction: this direction is the direction of above-mentioned elementary portion of terminal from above-mentioned contact rod separation.
5. according to each the described direct current shearing device in the claim 2 to 4, it is characterized in that,
Above-mentioned overcurrent cutting-off portion has:
Mechanical contact, it is configured in the supply line that is electrically connected between above-mentioned elementary portion of terminal and the above-mentioned secondary portion of terminal, and carries out on-off action; And
Open-close mechanism section; Be positioned at the operating grip that manual operation is used under the situation of on-position; This open-close mechanism section makes above-mentioned mechanical contact become closure state on the other hand, to be positioned at the aforesaid operations handle under the situation of the open-circuit position different with above-mentioned on-position to the sub-portion of above-mentioned secondary end supplying electric current allowing from above-mentioned elementary portion of terminal; This open-close mechanism section makes above-mentioned mechanical contact become off-state to cut off the electric current supply that carries out to the sub-portion of above-mentioned secondary end from above-mentioned elementary portion of terminal
Above-mentioned direct current shearing device also possesses:
Switch element, it is configured in the position of more leaning on above-mentioned elementary portion of terminal side than above-mentioned overcurrent cutting-off portion; And
Control part; The aforesaid operations handle from above-mentioned on-position under the situation of above-mentioned open-circuit position displacement; Make through above-mentioned open-close mechanism section before above-mentioned mechanical contact becomes off-state; Control part moves above-mentioned switch element under off-state, make the electric current above-mentioned overcurrent cutting-off portion that do not flow through.
6. direct current shearing device according to claim 5 is characterized in that also possessing:
Tripgear, it forcibly makes above-mentioned mechanical contact carry out off action; And
Current detecting part, its electric current to the above-mentioned mechanical contact of flowing through detects,
Wherein, Be under the situation more than the predefined current threshold by the detected electric current of above-mentioned current detecting part; Above-mentioned control part moves above-mentioned switch element to make the electric current above-mentioned overcurrent cutting-off portion that do not flow through under off-state; Afterwards, above-mentioned tripgear is controlled forcibly to make above-mentioned mechanical contact become off-state.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-232018 | 2009-10-05 | ||
| JP2009232018A JP4956850B2 (en) | 2009-10-05 | 2009-10-05 | DC breaker |
| PCT/IB2010/002469 WO2011042782A1 (en) | 2009-10-05 | 2010-09-30 | Direct current breaker device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102668000A true CN102668000A (en) | 2012-09-12 |
| CN102668000B CN102668000B (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080050185.7A Expired - Fee Related CN102668000B (en) | 2009-10-05 | 2010-09-30 | Direct current breaker device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4956850B2 (en) |
| CN (1) | CN102668000B (en) |
| WO (1) | WO2011042782A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208386A (en) * | 2013-03-29 | 2013-07-17 | 浙江大学 | High-voltage direct-current circuit breaker based on double switches |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023242989A1 (en) * | 2022-06-15 | 2023-12-21 | 株式会社オートネットワーク技術研究所 | Shut-off control device |
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| JPH11178193A (en) * | 1997-12-10 | 1999-07-02 | Matsushita Electric Ind Co Ltd | Power unit |
| JP2000175451A (en) * | 1998-09-29 | 2000-06-23 | Mitsubishi Electric Corp | Dc circuit breaking device |
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| JP2004266906A (en) * | 2003-02-28 | 2004-09-24 | Kyocera Mita Corp | Switching power circuit |
| JP2004281217A (en) * | 2003-03-14 | 2004-10-07 | Mitsubishi Electric Corp | Insertion type circuit breaker |
| JP4528552B2 (en) * | 2004-04-19 | 2010-08-18 | 株式会社東芝 | Excitation control device for synchronous machine |
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- 2009-10-05 JP JP2009232018A patent/JP4956850B2/en active Active
-
2010
- 2010-09-30 CN CN201080050185.7A patent/CN102668000B/en not_active Expired - Fee Related
- 2010-09-30 WO PCT/IB2010/002469 patent/WO2011042782A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6340848B1 (en) * | 1999-05-12 | 2002-01-22 | Yazaki Corporation | On-vehicle distribution box and distribution system |
| GB2379811A (en) * | 2001-08-07 | 2003-03-19 | Yazaki Corp | Electrical supply, conversion and overvoltage protection system |
| CN1453918A (en) * | 2002-04-26 | 2003-11-05 | 夏普公司 | Electric power supply device |
| CN200993910Y (en) * | 2006-12-18 | 2007-12-19 | 张介品 | Power switch delay circuit device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103208386A (en) * | 2013-03-29 | 2013-07-17 | 浙江大学 | High-voltage direct-current circuit breaker based on double switches |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011081974A (en) | 2011-04-21 |
| CN102668000B (en) | 2014-10-22 |
| JP4956850B2 (en) | 2012-06-20 |
| WO2011042782A1 (en) | 2011-04-14 |
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